mh-mh-to-mime-undo
mh-mh-to-mime-undo is an interactive autoloaded compiled Lisp function in `mh-mime.el
'.
(mh-mh-to-mime-undo NOCONFIRM)
Undo effects of M-x mh-mh-to-mime.
It does this by reverting to a backup file. You are prompted to
confirm this action, but you can avoid the confirmation by adding
a prefix argument NOCONFIRM.